could you explain better this new settings. Supposing that at the brokers I'm LONG 2 lots of ESZ8, I connect the strategy and on the chart I should be LONG of only 1 lot. I would have an option that automatically sell just 1 lot, set the marketposition=1, the EntryPrice=(Broker's)AvgPrice. It's this kind of option available ?

Synchronization in this scenario can be achieved if your code does not specify the number of contracts.

To synchronize the positions, in the 'Assume the Initial Position at the Broker' dialogue, specify exactly the same position for the same number of contracts as you have at the broker. In your case LONG and 2 respectively. As soon as the new order is generated, it will sell one contract on the chart and 2 contracts at the broker. After the orders are filled both on the chart and at the broker, you will have positions synchronized everywhere.

However, the above will not be possible if your code specifies the number of contracts to be sold.